Arguments

numeric or character vector indicating what sort of
plotting symbol to use. See points for the
interpretation of these values, and note fill below.

size

unit object specifying the size of the plotting symbols.

default.units

string indicating the default units to use
if x or y are only given as numeric vectors.

name

character identifier.

gp

an R object of class gpar, typically the output
from a call to the function gpar. This is basically
a list of graphical parameter settings; note that fill (and
not bg as in package graphicspoints) is
used to “fill”, i.e., color the background of symbols with
pch = 21:25.

draw

logical indicating whether graphics output should be produced.

vp

A Grid viewport object (or NULL).

Details

Both functions create a points grob (a graphical object describing
points), but only grid.points draws the points (and then only
if draw is TRUE).